COMMERCE 2QA3 Study Guide - Confidence Interval, Pearson Education, Financial Analyst
16 Dec 2014
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Answer: n = (1. 645)2 (0. 46) (0. 54) / (0. 05)2 = 268. 87 = 269 records. Answer: we are 90% confident that between 40. 06% and 47. 18% of the employment records from the canadian labour force are female. : 1: explain what 90% confidence means in this context. Answer: if many random samples were taken, 90% of the confidence intervals produced would contain the actual percentage of all female employment records in the canadian labour force. : 1: should representatives from statistics canada conclude that the percentage of females in the. Since 46% = 0. 46 lies in the confidence interval, (0. 4006, 0. 4718), it is possible that the percentage of females in the labour force matches europe"s rate of 46% female in the labour force. Answer: we have a random sample of less than 10% of the employment records, with 229 successes (females) and 296 failures (males), so the normal model applies.
